[tennisbiz] Ratio of members to courts

Can anyone tell me what a recommended ratio for members to
courts is please.

Currently our club which has 11 courts is busy Monday to
Thursday from 7.30 to 9.30 (i.e. you may have to wait 30 minutes for a
court - maximum booking time for courts is 1 hour) but other than that
courts are generally free unless there is a pre-arranged event.

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